Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Driving of tunnels at high speed
Flight loading at Polkemmet Colliery
Shuttle-car accidents in thin seams
Shuttle-car accidents in thick seams
Development of trackless transportation in Styrian Ersberg
Car transfer speeds rock gangway development
Use and handling of mine cars in british collieries
Solid tires on shuttle cars cut operating costs
Evolution of truck haulage at Enos
Shuttle car haulage in difficult conditions
Safety of underground transport
Safety of underground transport
Locomotive and mine-car systems
Dropbottom cars from autos serve Kanawha mines